By Dominic Chopping

Norway's largest private-sector union could join Swedish and Danish unions in industrial action against Tesla in a show of support for striking Swedish mechanics.

Mechanics at Sweden's IF Metall union have been striking since October, aiming to force the U.S. auto maker into signing a collective bargaining agreement.

Several other Swedish unions have also joined the industrial action, with dockworkers at all Swedish ports refusing to offload vehicles, electricians refusing to work on Tesla workshops or charging stations while postal workers are refusing to deliver anything to Tesla's workplaces.

The action spread to Denmark Tuesday, with the country's largest union saying its dockworkers and truck drivers will stop offloading and transporting Tesla cars that are bound for Sweden, preventing the U.S. company from circumventing a blockade at Swedish ports.

Norway's Fellesforbundet will now also take action to block the transport of Tesla cars to the Swedish market.

"Tesla should immediately accept IF Metall's demand for a collective agreement," Fellesforbundet leader Jorn Eggum said in a statement Wednesday. "If this isn't in place by Dec. 20, we will proceed with the implementation of boycott actions."

Eggum said it is too early to say what specific measures the union will take to support the strike in Sweden, but if Tesla fails to sign a collective bargaining agreement with Swedish workers, Fellesforbundet will ensure Tesla cannot transport Sweden-bound cars through Norway.

Write to Dominic Chopping at

(END) Dow Jones Newswires

12-06-23 0843ET